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प्रश्न
The diagram alongside represents the structure of the human ear.
(i) Write the names of the parts labelled a to g.
(ii) State briefly the functions of the parts b, d, and g.
(iii) Name the main division of the ear.
(iv) Which is the smallest bone in the human body?
(v) What is labyrinth?
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उत्तर
(i) (a) Bone of skull
(b) Inner ear
(c) Eardrum
(d) Bone of skull
(e) Bone of middle ear
(f) Middle ear
(g) Air filled
(ii) (b) Inner ear - It transmits the impulse to brain.
(d) Bone of skull - It helps in fixing the position of the ears to help the brain use auditory cues to judge direction and distance of sounds.
(g) Air filled - It keeps the pressure in the middle ear equalized with pressure in the outside.
(iii) The main division of the ear are: outer ear, middle ear and inner ear.
(iv) Stirrup
(v) The labyrinth is the inner ear which consists of utriculus, sacculus, cochlea and three semicircular canals.
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संबंधित प्रश्न
fill in the blanks with suitable functions: Ciliary body and __________.
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The auditory nerve is purely for perceiving sound
Verify experimentally the laws reflection of sound.
Select the CORRECT match of part of the human ear and its function.
______ is the smallest bone in the human body.
With reference to human ear answer the question that follow:
Name the part of the ear associated with the amplification of vibrations.
